#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <string.h>



int my_strlen(char* str) {
    int count = 0;
    while (*str != '\0') {
        count++;
        str++;
    }
    return count;
}

int day07() {
    char arr[] = "abc";
    int len = my_strlen(arr);  // strlen(arr);
    printf("%d", len);
    return 0;
}

